国外风电整机信息资料renewableenergyworld_090916.pdfVIP

Print September 16, 2009 Wind Technology Trends: Why Small Steps Matter Although the current slide in overall wind market demand means 2009 figures are unlikely to match recent booms, the dip has not come at the expense of wind technology innovation. by Eize de Vries, Wind Technology Correspondent London, UK [Renewable Energy World Magazine] More than 31,000 MW of new wind capacity was added worldwide in 2008, a record that can be described as an absolute milestone in the modern history of wind power development. Fortunately that build up -- and the dip in overall wind market demand that has followed the financial constraints -- did not take place at the expense of wind industry development nor technology innovation. The past year has seen another raft of developments and announcements. For instance, from Vestas , the world’s largest wind turbine manufacturer, comes the new 3-MW V112-3.0 MW. This new turbine, possibly the most important new turbine model introduction since the V90-3.0 MW was launched in 2003, joins the company’s existing range of models from 850 kW to 3 MW along with two other new products announced earlier this year. Among the features of the V112 are a three-point gearbox support, a permanent magnet-type synchronous generator with full converter, and a 112-metre rotor. Interestingly, this gearbox support solution signals a return to the drivetrain technology principles of the former NEG Micon, and is a mechanical layout that is also widely applied elsewhere in the industry. The switch of design concept is widely viewed as a departure from the lightweight V90-3.0 MW turbine model, which features a compact design with a semi-integrated drivetrain system. Also new from Vestas is the V100- 1.8 MW, which builds on the mechanical design principles of the V80-2.0 MW series. Compared with the V90-3.0 MW, the new V112